id:A098040 - OEIS Search Results

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First occurrence of numbers p such that p = (prime(n)+ prime(n+k))/2 is prime for prime indices n=2, 3, 5... and k=1, 2, ...

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5, 7, 11, 139, 11, 13, 449, 17, 23, 83, 23, 29, 331, 31, 67, 53, 37, 59, 41, 43, 113, 53, 509, 53, 269, 59, 83, 331, 67, 167, 71, 173, 89, 149, 83, 89, 101, 223, 311, 97, 101, 283, 101, 107, 113, 151, 137, 131, 157, 137, 127, 149, 137, 271, 137, 421, 197, 149, 257 (list; graph; listen)

	OFFSET	`2,1`
	EXAMPLE	`k=2, prime(2) + prime(2+2) = 10. 10/2 = 5` `k=3, prime(2) + prime(2+3) = 14. 14/2 = 7` `k=4, prime(3) + prime(3+4) = 22. 22/2 = 11`
	PROGRAM	`(PARI)`
	CROSSREFS	`Sequence in context: A104387 A133761 A057659 this_sequence A082565 A086255 A047382` `Adjacent sequences: A098037 A098038 A098039 this_sequence A098041 A098042 A098043`
	KEYWORD	`easy,nonn`
	AUTHOR	`Cino Hilliard (hillcino368(AT)gmail.com), Sep 10 2004`

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Last modified November 24 23:16 EST 2009. Contains 167481 sequences.

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